Multicolored lipstick and preparation thereof



g- 1965 F. s. MORSHAUSER ETAL 3,201,314

ULTICOLORED LIPSTICK AND PREPARATION THEREOF Filed May 17, 1963 1g 2g 243 L COLOR 1 COLOR 2 o o csa o o O o o o o o 0 0 MOLD FIG .I

INVENTORS FRED S. MORSHAUSER SAMUEL KALISH ATTORNEY United States Patent3,201,314 MULTICOLQ till) LlPS'lltClK AND PREPARATELN THEREUF Fred S.Morshauser, Pompton Plains, NJ and Samuel Kalish, New York, N.i1.,assignors to Warner-Lambert Pharmaceutical Company, Morris Plains,N..l., a corporation of Delaware Filed May 17, 1963, Ser. No. 281,216 4Claims. (Cl. 167-85) This invention relates to a multi-colored unitarycosmetic preparation. More particularly, the invention relates to amethod of producing a multi-colored lipstick wherein the several colorsare heterogeneously associated in the color combinations employed.

The application of several lipsticks to produce a twotoned ormulti-colored effect on the lips is a well-known practice. It iscustomary practice to use two lipsticks to achieve the desiredmulti-colored effect; one being applied as a base lining and the secondsuperimposed thereon for contrast.

In an attempt to produce a unitary lipstick having one color for liningand a second for contrast, lipsticks have been produced whereinindividual segments of different colors are molded separately and thesegments then pressed together to produce a unitary stick or mass. Suchlipsticks have, however, met with limited commercial success as they aremore difficult and expensive to produce than individual solid coloredlipsticks; Further, lipsticks which are formed by combining moldedlipstick segments of different colors into a multi-color tube arecommonly used as separate lipsticks offering the convenience of twocolors in one.

It has now been found that a unique cosmetic preparation comprising aheterogeneous multi-colored lipstick may be obtained in accordance withthe present invention by heterogeneously associating a plurality ofdiffer ently colored lipstick masses so as to produce a result which,heretofor, could only be accomplished by use of separate and distinctlipsticks. This invention arises out of the surprising discovery thatthe incorporation of certain additions in cosmetic lipstick baseformulations results in a degree of viscosity greater than is normallypresent in such molten masses and it is this enhanced viscosity whichenables the production of the heterogeneous color associations by thepractice of this invention.

An important object of this invention is to provide a multicoloredlipstick composition wherein the colors are so combined that aheterogeneous color effect is produced with the separate colors beingsharply delineated.

Another object of this invention is to rovide a method for preparingsuch multicolored lipsticks wherein the multi-colors are combined indistinctive fashion in but a single tube so that said tube is convenientfor the simultaneous application of the multi-colored mass to the lips.

Other objects will become apparent from the following detaileddescription and the accompanying drawing in which:

Fl. 1 is a flow diagram of the process employed in the present inventionfor producing the novel lipstick compositions of this invention, and

FIG. 2 is a side elevational view of the novel lipstick of thisinvention produced thereby.

More particularly, the invention provides a method for the preparationof multi-colored lipsticks having at least two distinctively differentshades of base formulation which comprises preparing a lipstick baseformulation, adding distinctively different coloring agents to separateportions of the lipstick base formulation, melting the separate lipstickbase formulations and combining the molten colored base formulationsinto a unitary product having substantially complete color separation.

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Referring to FIG. 1, a base formulation is prepared from a mixture ofingredients such as waxes, oils, and the like, preferably free ofcoloring pigments or perfumes and which are blended in tank 1d bystirring rod 12. If desired, different lipstick base formulations may beprepared for each separate coloring agent to be utilized in the finalproduct or, as shown in PEG. 1, a single base formulation may beprepared which is divided and subsequently combined with desired colorsand pigments. Regardless of how the lipstick base formulations areprepared, it is desirable that the base formulations for each color havesubstantially similar consistencies to produce a uniform product whencombined.

After the lipstick base formulations have been prepared individualportions are taken by lines 14 and 16-. and received in color blendingtanks 13 and 26. At least two distinctively different colors are thenadded to separate portions of the base formulation in the color blendingtanks through lines 22 and 2d and dispersed by stirrers 2s and 28 alongwith perfumes as desired. In this manner, a plurality of distinctivelycolored base compositions are prepared for further processing. The baseformulations, the coloring agents, any additive agents and the perfumesmay all be combined by any of the mixing methods well known to the artsuch as roller mills, colloid mills, and the like. Also, additionalcolors and coloring tanks may be used to prepare and combine coloredbases as described to give a multi-colored product in which more thantwo distinct colors are combined.

After the colors and pigments as well as perfumes, if desired, have beenadded to and combined with the lip stick base formulation in colorblending tanks 18 and, Ztl, an addition of an inert fortifying agentsuch as fine silica having an average particle size of approximately0.62 micron is made in an amount which can vary from a trace up to about12% by weight of the base. A preferred concentration of extremely finesilica is from about 2% up to about 5% by weight of the lipstick baseformulation. Although extremely finely divided silica is preferred as afortifying agent, various other finely powdered compositions may also beemployed provided they increase the molten viscosity of the baseformulations without affecting the uniform consistency of the ultimateproduct. Materials usefully employed as fortifying agents includematerials such as, for example, silica of larger particle size, alumina,calcium carbonate, magnesium carbonate, bentonites, talcs, zinc oxide,and the like. Various other means may also be employed to achieve theproper molten viscosity, such as, the addition of various oil solubleresins, soluble metallic soaps and viscous polymerized oils. Extremelyfine silica particles are preferred, however, because control over themolten viscosity is easily achieved with virtually no effect upon thefinal lipstick texture. This control is fundamentally important in themanufacture of lipstick according to this invention because viscousmolten masses promote the formation of sharply defined color separationwith virtually no intermixing. These fortifying agents may be addedduring the initial blending of the ingredients in tank it but by addingthem to the color blending tanks, greater control may be achieved inproducing the proper molten viscosity while maintaining uniformconsistency in the final product.

The blended color-containing base formulations from the color blendingtanks are allowed to flow by lines 39 and 32 into a funnel shapedheterogeneous blender 34 which is shown rotating about its vertical axisby gear 36 driven by electric powered motor 38 Under uniformlaminar-flow conditions, the flow from lines 30 and 32 of the colorblending tanks may be regulated to coincide to the mixed outflow vialine 46. This may be achieved by maintaining a slight reservoir at theconstriction of the funnel shaped heterogeneous blender, i.e., the pointwhere the colors are blended. However, a more desirable method ofachieving laminar-flow blending conditions in the heterogeneousassociation of colored base formulations is to add a divider plate, notshown, in the funnel for each particular color. Dividing partitions suchas annular, sectional and the like may also be employed to impartvarious design characteristics to the heterogeneous association ofcolored base formulations. When a dividing partition is used for twolipstick colors a stopper is inserted in the outflow stream while thecompartments, which may be heated, are filled. Thereupon, the stopper isremoved and the funnel rotated while the exit flow of blended colors isdirected into a suitable lipstick split mold.

The funnel shaped heterogeneous blender 34 may be rotated at anydesirable speed such as from about 1 rpm. up to about 200 r.p.m.,noncritically. Additional procedures may be devised to create desirableswirl and marbleized design effects which may readily be adapted to thepresent process such as, for example, by employing rotational motion ofspigots in place of the funnel, noncircular motion of the funnel, or ofthe mold, mold oscillating under a stationary funnel, mold oscillatingunder a rotating funnel, mold rotating under an oscillating funnel, orthe like. Other suitable combinations may also be devised which deliverat least two distinctively different colors into heterogeneousassociation under laminar-flow conditions. The apparatus shouldtheretofore be designed to avoid turbulent flow during the combining ofthe colors.

Referring to FIG. 2, there is shown a lipstick formed by the process ofFIG. 1 wherein a dark colored lipstick 42 is heterogeneously associatedwith a light colored lipstick 44 in the form of a lipstick tube. Thetube is shown in a case 46 having adjustable base 48 which may berotated for projection of the lipstick from the case.

The term heterogeneously associated as used herein means the intimatecombination of distinctively different colored base compositions to forma mass having virtually complete color separation which may be easilyperceived by the unaided, naked eye.

The compositions for use in base formulation include any suitable basematerial known to the art which contains materials such as carnauba wax,candelilla wax, Ozokerite, bees wax, lanolin, ceresin, spermaceti,isopropyl myristate and castor oil which when combined produce asuitable base formulation having the suitable viscosity for the moltencombination of the colors. An example of a suitable lipstick basecomposition usefully employed is as follows.

Composition: Weight percent Castor oil 65.0

Candelilla 7.0

Lanolin 10.0

Carnauba wax 3.0

Ozokerite 3.0

Beeswax 7.0 Isopropyl myristate 5.0

The coloring agents usefully employed in this invention to provideproper coloring to the base formulation prior to their beingheterogeneously associated includes those well known to the art such as,for example, Food, Drug and Cosmetic or Drug and Cosmetic certifiedcolors and inert pigments suitable for use in lipsticks. These dyes andpigments may be added in an amount from about to about 20 parts byweight for each 100 parts by weight of lipstick base. Flavoring such assynthetic 4. aromatics, essential oils, or other similar material mayalso be included if desired.

Additional material such as flavoring or perfumes are not necessary toor essential parts of the present composition but may be used as desiredin relatively small quantities.

The principles of this invention may be applied to molded cosmeticproducts other than lipstick specifically set forth herein. Cosmeticproducts usefully processed by the invention may also include moldedcosmetic sticks such as eye shadow, mascara, deodorant sticks or thelike.

It is understood that the foregoing detailed description is given merelyby way of illustration and that many variations may be made thereinwithout departing from the spirit of the invention, which is intended tobe limited only by the appended claims.

What is claimed is:

1. A method for the preparation of multi-colored unitary lipsticks whichcomprises preparing a lipstick base formulation, adding a first coloringagent to a first portion and a second coloring agent to a second portionof the lipstick base formulation, said first coloring agent beingdistinctively different and distinguishable in color by the naked,unaided eye from said second coloring agent, melting the separatelipstick base formulations with stirring to effect color distributionand thereafter combining the molten-colored base formulation into aunitary solid product having substantially complete color separationbetween the combined portions of base formulation.

2. A method for the preparation of rnulti-colored unitary lipstickswhich comprises preparing a lipstick base formulation, adding a firstcoloring agent to a first portion and a second coloring agent to asecond portion of the lipstick base formulation, said first coloringagent being distinctively different and distinguishable in color by thenaked, unaided eye from said second coloring agent, melting the coloredbase formulations while dispersing the color therein, blending less than12% by weight of an inert fortifying agent with each colored baseformulation, combining the molten-colored base formulation into aflowing stream and shaping the flowing stream into a solid producthaving substantially complete color separation between the combinedportion of base formulations.

3. A method as in claim 2 wherein the inert fortifying agent is finesilica particles having an average particle size of about 0.02 micron.

4. A multi-colored lipstick which comprises a heterogeneous associationof at least two distinctively different colored base compositions, saidcolored base compositions forming a unitary marbleized mass havingvirtually complete color separation easily perceived by the unaided,naked eye.

References Cited by the Examiner UNITED STATES PATENTS 2,566,722 9/51Friedberg 167-85 X 2,772,982 12/56 Vesce 16785 X 3,086,914 4/63 Solwayl67-85 FOREIGN PATENTS 1,064,713 12/53 France.

OTHER REFERENCES Merck Index, 7th ed., Merck and Co., Rahway, NJ., 1960,p. 934.

JULIAN S. LEVITT, Primary Examiner.

LEWIS GOTTS, Examiner.

1. A METHOD FOR THE PREPARATION OF MULTI-COLORED UNITARY LIPSTICKS WHICHCOMPRISES PREPARING A LIPSTICK BASE FORMULATION, ADDING A FIRST COLORINGAGENT TO A FIRST PORTION AND A SECOND COLORING AGENT TO A SECOND PORTIONOF THE LIPSTICK BASE FROMULATION, SAID FIRST COLORING AGENT BEINGDISTINCITIVELY DIFFERENT AND DISTINGUISHABLE IN COLOR BY THE NAKED,UNAIDED EYE FROM THE SECOND COLORING AGENT, MELTING THE SEPARATELIPSTICK BASE FROMULATIONS WITH STIRRING TO EFFECT COLOR DISTRIBUTIONAND THEREAFTER COMBINING THE MOLTEN-COLORED BASE FORMULATION INTO AUNITARY SOLID PRODUCT HAVING SUBSTANTIALLY COMPLETE COLOR SEPARATIONBETWEEN THE COMBINED PORTIONS OF BASE FROMULATION.